There are a few things you need to know about Tom Odell. There are the basic vital statistics: he’s a 22-year-old singer-songwriter from London, for instance, one whose debut album, Long Way Down, is set to arrive April 15 and whose rushing first single, Another Love, has already sound-tracked a Burberry campaign, BBC commercials and the lives of whoever picked up his melancholic EP, Songs From Another Love, last October.